The EV and O lights are "pre-emissions test" indicators on the tool.  The
code is back as we both expected and it brings up is P0441 and my "official"
Chrysler Service Manual states it is:

Evap Purge Flow Monitor; Insufficient or excessive vapor flow detected
during evaporative emission system operation.

My scan tool is INNOVA 3110 OBD2 Code Reader
http://www.canobd2.com/tool/ShowImage.asp?IID=3110 .  It is the exact same
one that O'Reilly Auto Parts uses for helping their customers as well as an
AutoZone I know of.  It's not bad for the home user that just needs more to
go on than a simple light on the dash.  It's by no means the $100,000+ one
that the dealership has.  There is nothing that can come close to those
beasts.

What would be the most likely cause(s) for this code to come on?

P0441 is NOT an LDP evaporative emission fault and not related to the gas
cap. It is a purge control valve fault. I have no idea what kind of scan
tool you are using. All scan tools are not the same. But I will  take a
guess on what I think you are talking about. If you cleared your codes you
also wiped out all the monitors that have been run and passed. Now the
engine controller is going to have to run all the monitors again and pass
them. you may have to drive this vehicle several days at different  loads
and speeds to get them to pass. If the purge control problem is not fix (and
im sure it isn't with a loose cap) that monitor will never pass and the lite
will be back on.

Glenn

Glenn,

2000 Intrepid
2.7L, 79k miles
Trouble Code: P0441

I tightened the gas cap and cleared the codes.  The MIL went out.  I now
have no codes in the display of my scan tool, yet, but I do have indicators
on my scanner for:

EV = Evaporative System Monitor
O = Oxygen Sensor Monitor

I  suspect that the indicators on my scan tool are telling me that the
systems indicating errors need to go through a full cycle of testing before
they will go out.

1.) Could all this be caused by a loose gas cap?

2.) Is my assumption on the test cycle completion correct?

Thanks